.sync-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.8);display:flex;justify-content:center;align-items:center;z-index:10000;opacity:0;visibility:hidden;transition:all .3s ease}.sync-overlay.active{opacity:1;visibility:visible}.sync-modal{background:var(--container-bg);padding:25px;border-radius:12px;width:90%;max-width:400px;text-align:center;box-shadow:0 5px 20px rgba(0,0,0,.2)}.sync-spinner{border:3px solid var(--border-color);border-top:3px solid var(--primary-color);border-radius:50%;width:40px;height:40px;margin:0 auto 20px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}.sync-message{color:var(--text-color);margin-bottom:20px;font-size:1.1em}.sync-actions{display:flex;gap:10px;justify-content:center}.sync-btn{padding:8px 20px;border-radius:6px;border:none;cursor:pointer;transition:all .2s ease}.sync-btn.confirm{background:var(--primary-color);color:#fff}.sync-btn.cancel{background:var(--border-color);color:var(--text-color)}.sync-btn:hover{transform:translateY(-2px);box-shadow:0 2px 8px rgba(0,0,0,.1)}